UFO-SPOTTERS were sent into a frenzy when an unexplained silver-grey sphere was captured on a Google Earth camera as it hovered in the skies above the USA. The orb was seen floating above trees on the border between Vermont and New York State.

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Google Maps: The funniest things caught on Google Maps Street View.

A satellite image shows a circle piece of land in Argentina in which theorists believe is the hiding place for a UFO.

According to the UFO Sighting Daily, the shape is large and circular enough to fit a 100 meter UFO through it.

Writing for the site, Scott C warned “Argentina has an overabundance of UFO sightings compared to the rest of the world and I believe this is how aliens try to hide this particular entrance to their base.”